Electric ignition for oil burners



April 29, 1930., A. P. HOLDEN ET AL ELECTRIC IGNITION FOR OIL BURNERSlallullll Patented Apr. 29, 1930 UNITED STATES PATENT OFFICE ARTHUR P.HOLDEN AND PHILIP MORGAN, OF TORONTO, ONTARIO, CANADA ELECTRIC IGNITIONFOR OIL BURNERS Application filed March 19, 1926. Serial No. 96,074.

The principal objects of the invention are, to overcome the difficultiesmet with in conducting the high tension current to the spark terminals,and to produce a simple and eifi cient arrangement of apparatus whichwill obviate the electrical losses and simplify and cheapen the cost ofconstruction.

The principal feature of the invention consists in the novelconstruction and arrangement of the spark terminal supports, whereby thesaid terminals are directly connected with the terminals of the hightension transformer without the use of cable leads.

In the drawings, Figure l is a longitudinal sectional view of an oilburner construction, showing the application of our improved elec-'trical terminals and transformer arrangement. v

Figure 2 is a plan view showing the transformer box cover removed. v

Figure 3 is-an enlarged perspective detail showing the terminal endconnections.

In the practice of'utilizing a high tension current for effecting ajump. spark for igni tion purposes in an oil burner, it has been foundvery difficult, in fact impossible, to obtain electric cables which willconduct the high tension current from the step-up transformer to thesparking terminals without losses which are highly detrimental to thesuccessful",operation of the device.

This invention proposes a very simple method of overcoming thedifficulty which is to support the transformer in direct closerelationship to the spark terminals and to connect the said sparkterminals directly with the terminals of the transformer. p

In the ap lication herein shown the casing 1 of the urner structure isformed with an offset 2-in the inward end and the atomizing nozzle 3 isarranged in the upper projecting portion and discharges through theorifice in the underside.

The ignition terminals 4 are long metal rods which extend through anopening 5 in the lower portion of the offset end of the casing.

The terminals 4 are enclosed for the major portion of their lengthinporcelain tubes 6 and these tubes are bedded at their outward ends insockets 7 formed in a porcelain block 8 and are securely cemented inplace.

The block 8 is enclosed in a casing 9 which is adjustably supported fromthe casing 1 and the casing 9 is provided with a suitable cap 10.

Secured to the bottom of the casing 9 is a transformer 11 which steps upthe voltage of the electric current to be supplied to the terminals andthe terminals 12 of the transformer extend through openings in thecasing 9, being suitably insulated and they are preferably directlysecured to the outward ends 13 of the sparking terminals 4.

It will be readily understoodthat when the sparking terminals are thusdirectly connected with the terminals of the transformer there will beno leakage losses or surface tension that will be objectionable, or thatwill offer any adverse condition to surrounding mechanisms.

What we claim as our invention is 1. In an oil burner, thecombinationwith I insulating block and extending beyond said casing, apair of sparking terminals extending through said insulating tubes andhaving their forward ends disposed in the path of discharge of saidburner nozzle, the rearward ends of said sparking terminals terminatingwithin said casing, and a transformer having its terminals extendinginto the interior of said casing and directly secured to the rearwardends of said sparking terminals.

3. In an oil burner, the combination with a burner nozzle, of a casingspaced from said nozzle and having an insulatingblock therein, a pair ofinsulating tubes secured in said insulating block and extending beyondsaid casing, a pair of sparking terminals extending through saidinsulating tubes and having their forward ends turned laterally and dis-I posed in the path of discharge of said burner nozzle, the rearwardends of said sparkin terminals terminating in the interior of saicasing, a transformer having its terminals extending into the interiorof said casing and drilled to receive the ends of said sparkingterminals, and set screws threaded into the transformer terminals andlocking said sparking terminals in an adjusted position againstcircumferential or longitudinal displacement,

4. In an oil burner, the combination with a burner nozzle, of a "c 5;spaced from said nozzle and having an opening in the side adjacent saidnozzle, an insulating block inserted in said casing and having spacedbosses extending through said. side opening, said bosses having socketrecesses therein, insulating tubes bedded at the ends in said bosssockets and extending toward said nozzle, ignition rods extendingthrough said insulating block andtubes havin I their rearward endsterminating in said casing and their forward ends disposed in the ath ofdischarge of said nozzle, and a trans ornier having its terminalsextending through a wall of said casing in ali 5w 4: ent with the endsof the terminal rods therein and secured directly thereto,

i' 1: P. HQLDEN. PIP MURGAN.

